Finite element analysis of shear-deficient RC beams strengthened with CFRP strips/sheets

Lee, Haeng‐Ki; Ha, S.K.; Afzal, Muhammad Shekaib

doi:10.12989/sem.2008.30.2.247

Cited by 12 publications

(7 citation statements)

References 19 publications

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“…An elasto-plastic damage property is used to simulate the nonlinearity of concrete [16,17] which is based on the classical continuum damage theory [18][19][20]. According to the recent analytical research, the 3-D linear brick solid element, C3D8, is considered to model concrete wall, shell element is used for simulation CFRP sheets and the linear truss element, T3D2, is used to model rebar in the ABAQUS [21][22]. Embedding technique is applied to interaction of rebars and concrete.…”

Section: First Validationmentioning

confidence: 99%

Performance of shear wall with external reinforcement by CFRP and steel sheets against blast load

Shirinzadeh¹,

Haghollahi²

2016

J. vibroeng.

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Increase of terrorist attack in the present time detects necessity of retrofitting of existent structures or design of new structures which can resist blast loads. In this research, a shear concrete wall subjected to explosive load will be analytically investigated. CFRP sheets will be applied for retrofitting the wall, and its performance in strengthening of the wall will be studied. Also a kind of shear composite wall is modeled and analyzed under the blast load. Results are compared, and advantages and disadvantages of these types of walls will be represented. Validation of analytical simulation is done by modeling of two experimental tests and good agreements have been obtained. Results show that pasting every other CFRP layers in vertical manner will increase performance of the wall as well as warping the entire wall by CFRP sheets. External reinforcement by CFRP will significantly improve energy absorption of the wall comparing use of steel sheets. Also, increase of number of layers causes consideration improve in energy damping and negligible effect on wall displacement.

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Section: First Validationmentioning

confidence: 99%

Performance of shear wall with external reinforcement by CFRP and steel sheets against blast load

Shirinzadeh¹,

Haghollahi²

2016

J. vibroeng.

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“…2. Plasticity → Non-linear and uncoupled, using a kinematic hardening model with a half-cycled definition (ABAQUS manual, Lee et al 2008). 3.…”

Section: Model Parameter Summarymentioning

confidence: 99%

Experimentally validated FEA models of HF2V damage free steel connections for use in full structural analyses

Desombre¹,

Rodgers²,

MacRae³

et al. 2011

Structural Engineering and Mechanics

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Abstract. The aim of this research is to model the behaviour of recently developed high force to volume (HF2V) passive energy dissipation devices using a simple finite element (FE) model. Thus, the end result will be suitable for use in a standard FE code to enable computationally fast and efficient analysis and design. Two models are developed. First, a detailed axial model that models an experimental setup is created to validate the approach versus experimental results. Second, a computationally and geometrically simpler equivalent rotational hinge element model is presented. Both models are created in ABAQUS, a standard nonlinear FE code. The elastic, plastic and damping properties of the elements used to model the HF2V devices are based on results from a series of quasi-static force-displacement loops and velocity based tests of these HF2V devices. Comparison of the FE model results with the experimental results from a half scale steel beam-column sub-assembly are within 10% error. The rotational model matches the output of the more complex and computationally expensive axial element model. The simpler model will allow computationally efficient non-linear analysis of large structures with many degrees of freedom, while the more complex and physically accurate axial model will allow detailed analysis of joint connection architecture. Their high correlation to experimental results helps better guarantee the fidelity of the results of such investigations.

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“…e model represented the concrete model with cohesive bonded laminates and could predict the experimental results accurately. Baghi and Barros [40], Khan et al [41], and Lee et al [42] also tested CFRP shear-strengthened numerical model of T-beams for the load carrying capacity, crack patterns, strain in the CFRP laminates, and failure modes of the tested beams where the model was successful with high accuracy. In addition, the authors used the model for parametric study to predict the effect of shear link reinforcement ratio on beam capacity.…”

Section: Introductionmentioning

confidence: 99%

Embedded Connector in Severe Optimization of Steel Plate for Shear Strengthening of RC Beam: Experimental and Numerical Investigations

Alam

Bakkar

Onik

et al. 2018

Advances in Civil Engineering

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Environmental impact has become one of the major factors taken into consideration for recent civil engineering studies and projects. us, researchers have been concentrating on shear strengthening of existing reinforced concrete structure as an upgrade method instead of demolishing and reconstructing. In general, shear strengthening of RC beams using externally bonded steel plate has gained huge popularity. However, premature debonding of plates is the main drawback of the system, which could be mitigated using embedded connector; thus, the dimension of steel plate could be reduced significantly. Furthermore, numerical analysis on shear strengthening of beams using embedded connector would provide a great insight on the structural behavior. e aim of this research is to severely reduce the dimension of the steel plate using embedded connector for shear strengthening of RC beams and to investigate the performances of optimized shear-strengthened beams through experimental and numerical investigations. e results showed that the dimension of plate was reduced without debonding of the plate if the beam was designed for shear strengthening with the consideration of yield strength of steel plate and shear link. Experimental results showed a maximum increase in failure of 24%. e numerical results predicted accurately the structural performance of beams. e embedded connector had a great effect in deferring and minimizing the debonding failure and accordingly increasing the maximum load of shear failure between 14.5% and 24% compared to control beam.

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Finite element analysis of shear-deficient RC beams strengthened with CFRP strips/sheets

Cited by 12 publications

References 19 publications

Performance of shear wall with external reinforcement by CFRP and steel sheets against blast load

Performance of shear wall with external reinforcement by CFRP and steel sheets against blast load

Experimentally validated FEA models of HF2V damage free steel connections for use in full structural analyses

Embedded Connector in Severe Optimization of Steel Plate for Shear Strengthening of RC Beam: Experimental and Numerical Investigations

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